Enlarge / A user in Singaapore holding the TraceTogether device that can be used for COVID-19 contact tracing in lieu of a smartphone app. (credit: Roslan Rahman | AFP | Getty Images )

The government of Singapore said this week it has used data gathered for COVID-19 mitigation purposes in criminal investigations, sparking privacy concerns about contact tracing both in Singapore and elsewhere in the world.

Singapore's contract-tracing app, TraceTogether, has been adopted by nearly 80 percent of the country's population, according to The Guardian , and Singaporeans are required to use it to enter certain gathering places such as shopping malls.

TraceTogether's privacy statement originally read, "Data will only be used for Covid-19 contact tracing," but it was updated this week to add, "Authorised Police officers may invoke Criminal Procedure Code (CPC) powers to request users to upload their TraceTogether data for criminal investigations. The Singapore Police Force is empowered under the CPC to obtain any data, including TraceTogether data, for criminal investigations," The Register reports.